Performance Cylinder Heads 6.4 Hemi (Apache)

Performance Apache cylinder heads for 6.4 Hemi engines

Mopar comparison numbers: 68280510AD, RL086555AA, 68086555AA, 68086555AB, 68278048AA, 68280510AA, 68280510AB, 68280510AC, 68280511AD, RL086556AA, 68086556AA, 68278049AA, 68280511AA, 68280511AB, 68280511AC

Our ported cylinder heads are the ideal choice if you want to get the most out of your engine.
Thanks to precise machining and individual optimization of the intake and exhaust ports, our cylinder heads offer measurable and noticeable performance increases - whether on the race track or on the road.

Properties:

• Enlarged and flow-optimized intake and exhaust ducts: For maximum air flow and optimum mixture formation.
• Machined valve seats: Precise transitions for improved gas flow and high thermal resilience.
• New valves: High-quality and durable - perfectly matched to the overall system.
• New PSI 1511 valve springs: For the highest speeds and maximum spring force - ideal for performance-enhanced engines.
• New valve stem seals: Reliable protection against oil loss and gas breakthrough.
• New molybdenum valve spring retainers: Particularly light and extremely resilient - for lower inertia forces in the valve train.
• Completely ready to install: no additional assembly work - unpack, install, ride.

Advantages:

• More power and torque: noticeable increase across the entire speed range.
• Faster throttle response: Optimized airflow ensures more direct reactions.
• More efficient combustion: Better mixture swirling for more efficiency and power.
• Greater thermal stability: Longer service life even under full load.

Fits:

* Depending on availability, these may be new parts or remanufactured cylinder heads.
Please ask for availability.

Delivery includes:

• 2 cylinder heads